Finding the Fourth Proportional to 6,931.22, 9,566.74 and 3,947.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,931.22 : 9,566.74 = 3,947.78 : x
2. Step 2: Convert to fraction form
   6,931.22/9,566.74 = 3,947.78/x
3. Step 3: Cross multiply
   6,931.22x = 9,566.74 × 3,947.78
4. Step 4: Simplify right side
   6,931.22x = 37,767,413.69
5. Step 5: Solve for x
   x = 37,767,413.69/6,931.22
6. Step 6: Final answer
   x = 5,448.89